You should change the default configuration settings when
using Microsoft SQL Server. Right-click the local server in Oracle
Enterprise Manager to access the properties dialog box.

Memory settings

Change the minimum memory allocation to as large a number
as possible. If the database is running on a separate computer,
use all the memory. The default settings do not aggressively allocate
memory, which hinders performance on almost any database. You should
be most aggressive in allocating memory on production machines.

Processor settings

Modify the processor settings and, most importantly, select
the Boost SQL Server Priority On Windows check box so that the server
uses as many cycles as possible. The Use NT Fibers setting is less
important, but you may want to select it too.

Database settings

Change the database settings. The most important setting
is Recovery Interval, which specifies the maximum amount of time
to wait for recovery after a crash. The default setting is one minute.
Using a larger value, from 5 to 15 minutes, improves performance
because it gives the server more time to write changes from the
database log back into the database files.

Note:

This setting does not compromise the transactional
behavior because it changes only the length of the log file replay
that must be done on startup.

Set the Space Allocated size for both the log and the data file
to be much larger than the initial database. Consider how much the
database can grow over of a year. Ideally, the log and data files
are allocated in a contiguous extent so that data does not end up
fragmented all over the disk.

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